Claims
- 1. A dye stabilizer represented by the following formula:
- 2. The dye stabilizer of claim 1 wherein said metal ion is a divalent metal ion.
- 3. The dye stabilizer of claim 2 wherein said metal ion is Co, Cu, Fe, Mn, Ni, Zr, Pd, Pt or Zn.
- 4. The dye stabilizer of claim 3 wherein said metal ion is Ni.
- 5. The dye stabilizer of claim 1 wherein Rf is prepared from one or more types of the fluorinated monomers selected from a group consisting of epoxide, hydrofuran, cyclolactone, cyclolactam, acrylate, methacrylate and vinyl.
- 6. The dye stabilizer of claim 1 wherein Rf is:
- 7. The dye stabilizer of claim 1 wherein one of R1, R2, R3, R4 and R5 is Rf-A- and the remaining four are independently hydrogen or alkyl.
- 8. The dye stabilizer of claim 7 wherein one of R1, R2, R3 and R4 is Rf-A-, R5 is alkyl and the remaining three are all hydrogen.
- 9. The dye stabilizer of claim 8 wherein R5 is methyl.
- 10. The dye stabilizer of claim 7 wherein A in Rf-A- is oxygen or absent and Rf is a completely or partially fluorinated alkyl of 6 to 20 carbon atoms.
- 11. The dye stabilizer of claim 6 wherein A in Rf-A- is oxygen or an alkylene chain and Rf is a fluorinated polymeric or oligomeric chain.
- 12. The dye stabilizer of claim 11 wherein Rf is:
- 13. The dye stabilizer of claim 12 wherein the open substituent positions are independently hydrogen, fluorine or fluorinated alkyl.
- 14. The dye stabilizer of claim 11 wherein said fluorinated polymeric or oligomeric chain is a fluorinated polyether.
- 15. A dye stabilizer represented by Formula 2 or 3:
- 16. The dye stabilizer of claim 15 wherein said metal ion is Ni, Co, Cu, Fe, Mn, Zr, Pd, Pt, Mg, Al or Zn.
- 17. The dye stabilizer of claim 15 wherein Rf is prepared from one or more types of the fluorinated monomers selected from a group consisting of epoxide, hydrofuran, cyclolactone, cyclolactam, acrylate, methacrylate and vinyl.
- 18. A dye stabilizer represented by Formula 4, 5 or 6:
- 19. The dye stabilizer of claim 18 wherein Rf is prepared from one or more types of the fluorinated monomers selected from a group consisting of epoxide, hydrofuran, cyclolactone, cyclolactam, acrylate, methacrylate and vinyl.
- 20. A dye stabilizer represented by Formula 7:
- 21. The dye stabilizer of claim 20 wherein M is Co, Cu, Fe, Mn, Ni, Zr, Pd, Pt or Zn.
- 22. The dye stabilizer of claim 1, 15, 18 or 20 wherein A in Rf-A- is absent and Rf is a completely or partially fluorinated alkyl of 6-20 carbon atoms.
- 23. The dye stabilizer of claim 1, 15, 18 or 20 wherein R1, R2, R3, R4 and R5 in Formulas 1 and 3, R1, R2, R3 and R4 in Formula 2, R1 and R2 in Formulas 4, 5 and 7 and R1, R2 and R3 in Formula 6 are so selected that the total fluorine content of the dye stabilizer molecule is at least 10% by weight of the molecule.
- 24. The dye stabilizer of claim 23 wherein the total fluorine content of the dye stabilizer molecule is at least 20% by weight of the molecule.
- 25. The dye stabilizer of claim 24 wherein the total fluorine content of the dye stabilizer molecule is at least 50% by weight of the molecule.
- 26. An electrophoretic fluid comprising charged pigment particles dispersed in a dieletric solvent or solvent mixture, a dye or dye mixture and a dye stabilizer represented by Formula 1:
- 27. The electrophoretic fluid of claim 26 wherein said metal ion is Co, Cu, Fe, Mn, Ni, Zr, Pd, Pt or Zn.
- 28. The electrophoretic fluid of claim 27 wherein said metal ion is Ni.
- 29. The electrophoretic fluid of claim 26 wherein Rf is prepared from one or more types of the fluorinated monomers selected from a group consisting of epoxide, hydrofuran, cyclolactone, cyclolactam, acrylate, methacrylate and vinyl.
- 30. The electrophoretic fluid of claim 26 wherein one of R1, R2, R3 and R4 and R5 is Rf-A- and the remaining four are independently hydrogen or alkyl.
- 31. The electrophoretic fluid of claim 30 wherein one of R1, R2, R3 and R4 is Rf-A-, R5 is alkyl and the remaining three are all hydrogen.
- 32. The electrophoretic fluid of claim 31 wherein R5 is methyl.
- 33. The electrophoretic fluid of claim 30 wherein A in Rf-A- is oxygen or absent and Rf is a completely or partially fluorinated alkyl of 6 to 20 carbon atoms.
- 34. The electrophoretic fluid of claim 30 wherein A in Rf-A- is oxygen or an alkylene chain and Rf is a fluorinated polymeric or oligomeric chain.
- 35. The electrophoretic fluid of claim 34 wherein Rf is:
- 36. The electrophoretic fluid of claim 35 wherein the open substituent positions are independently hydrogen, fluorine or fluorinated alkyl.
- 37. The electrophoretic fluid of claim 34 wherein said fluorinated polymeric or oligomeric chain is fluorinated polyether.
- 38. The electrophoretic fluid of claim 30 wherein A in Rf-A- is absent and Rf is a completely or partially fluorinated alkyl of 6-20 carbon atoms.
- 39. The electrophoretic fluid of claim 26 wherein said colorant is a Si phthalocyanine or napthalocyanine dye.
- 40. The electrophoretic fluid of claim 39 wherein said Si phthalocyanine or napthalocyanine dye is represented by the following formulas:
- 41. The electrophoretic fluid of claim 40 wherein the substituents, R6, R7, R8, R9, R10, Rf′, and n′ are so selected that the total fluorine content of the silicon phthalocyanine dye is at least 20% by weight of the dye molecule.
- 42. The electrophoretic fluid of claim 41 wherein the substituents, R6, R7, R8, R9, R10, Rf′, and n′ are so selected that the total fluorine content of the silicon phthalocyanine dye is at least 30% by weight of the dye molecule.
- 43. The electrophoretic fluid of claim 42 wherein the substituents, R6, R7, R8, R9, R10, Rf′, and n′ are so selected that the total fluorine content of the silicon phthalocyanine dye is at least 50% by weight of the dye molecule.
- 44. The electrophoretic display of claim 26 wherein said colorant mixture comprises a Si phthalocyanine or naphthalocyanine dye and a Cu phthalocyanine dye.
- 45. The electrophoretic display of claim 44 wherein said Cu phthalocyanine dye is represented by the following formula:
- 46. The electrophoretic fluid of claim 45 wherein n is 4-12.
- 47. The electrophoretic fluid of claim 44 wherein the ratio of the Si phthalocyanine or naphthalocyanine dye to the Cu phthalocyanine dye is {fraction (1/10)} to 10/1.
- 48. The electrophoretic fluid of claim 47 wherein the ratio of the Si phthalocyanine or naphthalocyanine dye to the Cu phthalocyanine dye is ⅕ to 5/1.
- 49. The electrophoretic fluid of claim 48 wherein the ratio of the Si phthalocyanine or naphthalocyanine dye to the Cu phthalocyanine dye is ⅓ to 3/1.
- 50. The electrophoretic fluid of claim 26 wherein said dielectric solvent is a halogenated solvent.
- 51. The electrophoretic fluid of claim 50 wherein said solvent is a fluorinated solvent.
- 52. The electrophoretic fluid of claim 51 wherein said fluorinated solvent is selected from a group consisting of perfluoroalkanes, perfluorocycloalkanes, perfluoroarylalkanes, perfluoro-tert-amines, perfluoropolyethers, hydrofluoropolyethers and poly(chlorotrifluoroethylene).
- 53. The electrophoretic fluid of claim 52 wherein said perfluoropolyether and hydrofluoropolyether are selected from a group consisting of Solvay Solexis HT-170, HT-200, HT-230, ZT-180 and Dupont trifluoro(trifluoromethyl)-oxirane homopolymers K-6 and K-7 fluids.
- 54. An electrophoretic display comprising display cells filled with a display composition which comprises pigment particles dispersed in a dielectric solvent, a dye or dye mixture and a dye stabilizer represented by the following formula:
- 55. The display of claim 54 which is prepared by the Microcup® technology.
- 56. The display of claim 54 which is prepared by a microencapsulation process.
- 57. An electrophoretic fluid comprising charged pigment particles dispersed in a dieletric solvent or solvent mixture, a colorant or colorant mixture and a dye stabilizer of claim 15, 18 or 20.
- 58. An electrophoretic display comprising display cells filled with a display composition which comprises pigment particles dispersed in a dielectric solvent, a dye or dye mixture and a dye stabilizer of claim 15, 18 or 20.
RELATED APPLICATIONS
[0001] This application claims the priority under 35 USC 119(e) of U.S. Provisional Applications No. 60/418,847, filed Oct. 15, 2002, and 60/436,907, filed Dec. 24, 2002. The whole content of each of these applications is incorporated into this application by reference.
Provisional Applications (2)
|
Number |
Date |
Country |
|
60418847 |
Oct 2002 |
US |
|
60436907 |
Dec 2002 |
US |